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Earnings Per Share - Computation of Basic Earnings and Diluted Earnings Per Share Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator for basic and diluted earnings per share:
Net income, basic	$ 53,233	$ 44,170	$ 133,163	$ 106,676
Net income, diluted	$ 53,233	$ 44,170	$ 133,163	$ 106,676
Denominator:
Weighted-average basic common shares outstanding (in shares)	41,600	40,888	41,523	40,805
Assumed conversion of dilutive securities:
Stock awards (in shares)	807	1,398	902	1,391
Convertible Senior Notes (in shares)	0	0	0	0
Denominator for diluted earnings per share- Adjusted weighted-average shares (in shares)	42,407	42,286	42,425	42,196
Earnings per common share:
Basic (in usd per share)	$ 1.28	$ 1.08	$ 3.21	$ 2.61
Diluted (in usd per share)	$ 1.26	$ 1.04	$ 3.14	$ 2.53

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